Need help on geomtry homework

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Which graph represents the given linear function 4x+2y=3